Locking-hinge.



P. T. GEDERSTROM.

LOGKIIIG HINGE. APPLICATION FILED AUG. 5, 1912.

l atented A n'm, 1913.

2 SHEETS-SHEET 1.

P. T. CEDERSTROM.

LOCKING HINGE.

APPLICATION FILED AUG. 5, 1912.

1,058,842. Pa nted Apr. 15, 1913.

2 SHEETS-SHEET 2 jaw/775 M lliinessw 4 ww fi Eat r 7: Wm M? hw/M@6r 4Mff eo h rarflaa r. cana'asraom, orcmcneo;,,1rnmo:s, Assrcnon-oronnnarrroamaar,

nsannaanr saosxorr,

or cnrsaco, rumors. j

menus-nurse:

- Specification-oi name Application area August li, 19,12. sonar in.713,461.

eht JAPe-IaL a To all whom z'tmay concemr Be it'knownthat I,'PETERTOBIAS Cannas'rnorr, a citizen of the United States, and aresidentof the city of Chicago, in the. county of Cook-and State ofIllinois,have invented a certain new .and useful Improvement in LockingeHin'ges;and I do hereby declare that the following description ofmy'saidinvention, takemin connection with the accompanying sheets of.drawings, formsa full, clear, and exact specification, which willenable-others skilled in the art to which it appertains to. make and usethe same.

This invention has general reference to improvemeritsin locking hinges,-and it con sists, essentiallin the novel andpeculiar combination 0artsand details: of con struotion', as hereinafter first fully setforth-g anddescribed, and then pointed out, in the claims.

. the drawings already referred to, which serve: to-- illustrate my saidinvention more fully, Fi rel is a perspective view --of an automob' ewind shield equipped with my'l'ocking hinge;'Fig.,2 is a frontelevation.

of the same, and. Fig. 3 an enddevation thereof, Fig. 4 is a sideelevation of my (19''. vice' detached, and- Fig. 5 a longitudinalsection of the same, takenin the direction of e arrow pointers in line0- O of Fig. 4." Fig. 6 is a s de'elevation of one of the leaves of thehinge detached, and Fig. -7 a tflinsa verse section looking in thedirection of the arrow pointers in line-l- 1' of Fig. 5..- Fig; 8 is asideelevation of the leaf' opposed to that shown in Fig. .6," and Figs.9 and 10, are an elevation nd Flam respectively, of de-- tails ofconstruction. Fig. 11 is a side'elevation of a fragment of my hinge asapplied to an automobi e wind shield. The object of my invention is: theproduction of a locking hinge. which may" be applied to the usua type ofwind shields used on automobiles; to horizontall or vertically pivotedwindows in ofiice bui dings, to cel- 19.:- windows, and, in fact to anylace where a hinge is desired wherein t e portion hinged will remain. inthe position it was last placed until removed therefrom by manualpressure.

It is a further aim of my invention to arrange in the carrying outthereof, certain means whereby the effort required to operate the hingemay be increased or reduced to meet. the various requirements.

loweror stationary shield.

will first describe myinvention as. a'ppl ed; to the regulation.automobile wind fihle dg" 1 f .I i

5A,: In; Figs. 1,2, and .3,--'ind ioates} an ward extension of the: foot1" @bwd' of utomobile sis is .recaneam, fi dtosaid arena! y'suitableclips- 19,. which; glass forms C -fare the lower eaves of mylockiugfhinge D, wh1'c'h leaves are afiixed to. the uppercor- :ners ofglass B in any suitable manner and connected. with the bodyof theatrtomobile by diagonal braces-G for stiffening purposes.

E are the upper leaves of the hinge, at the free ends of which arerotatabl attached heads F, which heads are attached. to the opposite"edges of a rotatable glass H,-which, as seen in Fig. 3,;is adapted to beoscillated independently about. the free ends or. the upper leaves E, sothat any desired pitch: orposltion withimthe limits of the hinge,{111?b9i1'I1Pfl-It9dto the glass 7 he lower leaf 0, Figs. 4, 5, 8', hasformed at one end a diskdike hubofboes=.1, which boss may be formed tangmtiall .to the as particular may,

may be-most desirablefor; tho.- ui'i'to' w has a concentric projection 2smaller diameter, and an axial, screw threaded shank or stud 31 n theface of the projection '2 isdrilled a lurality of .concentricallyarranged, .e ually spaced holes 4, Fig. 7, into whic are tightly pressedcylindrical, steel tubes, preferably .hardened, which tubes 5 areadapted to receive helical springs 6,1the-u per ends of which supportballs 7-, which 7 vills are just a. nice fit in said tubes and projectbeyond the face of the rejection-2 practically onehalf oftheir lameter.-Fitting over said projection is an internally bored boss 8 of the upperleaf E. This latter boss may also be tangent to the edge of the leaf Eand offset therefrom, or it may be centrally arranged in the same lane.In the bot-tom of the internally bore portion of boss '8, there isfastened by rivets 9 or'otherwise, a carbonized steel plate 10, whichplate is drilled with a plurality of coucentricallyarranged,

. v If -m' ay. beioifset to said leaf (1,, as? shown; in Fig. 5;,or adirect continuation thereof,

equally spaced holes 11, which holes 11 are in register with the balls 7-when the parts are assembled. Said boss'8 and'plate 10 have a central,axial, circular opening'lSZ, which is adapted to fit over the shank orstud 3 on the boss 1. It will now ,be ob-' served that when the boss .8is slipped into place upon boss 1, the balls *7 will project mto theholes 11, and that if. revolution of either leaf be attempted, the saidbosses will either be forced apart, or the balls 7 will be compelled toretreat into the tubes 5, thereby compressing the springs 6. To preventsaid bosses from being-so forced apart, I place over the threaded stud 3a washer 12 and a nut 13 which latter, when screwed up,

will effectually prevent anyspreading tend ency; Revolution of this nutis prevented by a set screw 14, bearing upon said shank or stud, or Imay emplo, 'a castellated nut, as seen in Fig. 11, wit a cotter pin 15.Attention is now called to the fact that the effort necessary tooscillate either of theleaves will be directly proportionate to howtightly nut 13 is screwed up, and it is obvious that as the balls 7 areentered in holes 11, effort is required to dislod e them by an enforcedretreat into the tu es 5, before either leaf may be moved. While theballs are so retreated, the oscillation or revolution of the leaf orleavesis an easy matter until the next succeeding holes 11 registerwiththe balls 7, whereuponsaid balls, acted upon b the compressed springs 6,engage said ho es.-

When this device is used as a hinge for automobile wind shields, thewashers 12 become the terminals for the braces G, hereinbefore referredto. When so'employed, I form on the free ends of the leaves E, bosses 8,which are constructed preciselyas are bosses 8, and which co act withheads F to permit the independent oscillation of top" shield H. Theseheads F are made with the same elements as boss 1, and operate inexactly the same manner.

Locking hinges of the type described are generally made from bronze forthe more expensive hinges, or from malleable iron for. the cheapergrades. As is well known, both of these metals are very ductile and not"of dense grain, so that a hinge operated with the balls bearing directlyupon the bare metals, would not only have the holes 4 quickly enlarged,but would also have a pathway cutlbetween the holes 11, as a result ofwhich the device wouldbecomeuse- 'less in a very short time, because ofinability 11 to effect the proper operation of the hinge. L

Having thus fully described my invention, I claim as new and desire tosecure to myself by Letters Patent of the United States 1. In a hinge, aleaf with a boss, said boss having a series of concentric holes in theface thereof, hardened steel tubes forced into said holes, balls fittingthe interior of saidtubes, means within said tubes to force said ballsoutwardly, a second leafpossessing a boss, a hardened steel disk fixedto the face thereof, there being a series of concentrically arrangedpockets in the face of said disk,

which pockets are in register with said balls, and adjustable means forretaining said bosses in juxtaposition to each other.

2. In a hinge, a leaf with a boss, said boss having a series of circularholes in the face thereof, hardened steel tubes forced into said holes,balls fitting the interior of said tubes, helical springs in said tubestendin to force saidfballs outwardly, a second lea possessing a boss, ahardened steel disk fixed to the face thereof, there being a series ofconcentrically arranged pockets in the'face of said .disk,"which pocketsare in register with said balls, and adjustable means {for retainingsaid bosses in juxtaposition to each other.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

PETER '15-. OEDERSTROM.

In the presence of- W. I. LoRcLUnc, WILLIAM O Sranx.

